.biaoti{width: 1000px;height: 30px;margin: auto;text-align: center;line-height: 30px;background-image: url(../img/未标题-1.png);border-bottom: solid  blueviolet 2px;}
div a{width: 200px;height: 30px;float: left;color: #4B0082;}
div a:hover{width: 200px;height: 30px;background: brown;float: left;color: #DC143C;}
